extract_android

#!/bin/bash


if [ "$(id -u)" != "0" ]; then
   echo "Script must be run as root !"
   exit 0
fi

. params.sh
. func.sh

echo ""
date
echo "***********************************************"
echo "* Extracting structure of android SD Card     *"
echo "* and copying partitions data to directories  *"
echo "***********************************************"
echo ""


check_sdcard "noimage"
if [ $? -ne 0 ]; then
	exit $?
fi


umount ${sdcard}* > /dev/null 2>&1
sleep 1

mkdir -p ${bkpdir} > /dev/null 2>&1

#=======================================================================

get_partstruct

echo ""
if [ "${system_start}" = "" ] || [ "${userdata_start}" = "" ] || [ "${cache_start}" = "" ] || [ "${storage_start}" = "" ]; then
	echo "Bad SDCard partition structure !"
	exit 1
fi
if [ "${dualb}" = "" ]; then
	if [ ! "${system_start}" = "${storage_offset}" ]; then
		echo "Bad SDCard partition structure (start) !"
		exit 1
	fi
else
	if [ ! "${storage_start}" = "${storage_offset}" ]; then
		echo "Bad SDCard partition structure (start)!"
		exit 1
	fi
	echo "SDCard is tripleboot card!"
fi


echo ""
echo -n "WARNING: Android files in $bkpdir WILL BE UPDATED !, Continue (y/N)?  "
read -n 1 ANSWER

if [ ! "${ANSWER}" = "y" ] ; then
    echo "."
    echo "Canceled.."
    exit 0
fi

echo ""
if [ "${dualb}" = "" ]; then
    echo "Extracting android u-boot sections, $system_start, $(expr $system_start / 2048 )M ..."
else
    echo "Extracting android u-boot sections, $storage_start, $(expr $storage_start / 2048 )M ..."
fi
read_uboot_section

# EXTRACT FILE SYSTEMs
echo ""


mkdir _mnt > /dev/null 2>&1
umount _mnt > /dev/null 2>&1

#----------------------------------------------------------------------------------------------------------
mkdir ${bkpdir}/system > /dev/null 2>&1
mount ${sdcard}2 _mnt > /dev/null 2>&1
if [ $? -ne 0 ]; then
	echo "ERROR mounting ${sdcard}2"
	exit 1
fi
echo "Copying system partition ..."
rsync -r -t -p -o -g -x --delete -l -H -D --numeric-ids -s --stats _mnt/ ${bkpdir}/system/ > /dev/null 2>&1
sync
fs_size=`du -s -h ${bkpdir}/system | awk '{print $1}'`
echo "File system size: $fs_size"
umount _mnt
#----------------------------------------------------------------------------------------------------------

#----------------------------------------------------------------------------------------------------------
mkdir ${bkpdir}/userdata > /dev/null 2>&1
mount ${sdcard}3 _mnt > /dev/null 2>&1
if [ $? -ne 0 ]; then
	echo "ERROR mounting ${sdcard}3"
	exit 1
fi
echo ""
echo "Copying userdata partition ..."
rsync -r -t -p -o -g -x --delete -l -H -D --numeric-ids -s --stats _mnt/ ${bkpdir}/userdata/ > /dev/null 2>&1
sync
fs_size=`du -s -h ${bkpdir}/userdata | awk '{print $1}'`
echo "File system size: $fs_size"
umount _mnt

mkdir ${bkpdir}/cache > /dev/null 2>&1
mount ${sdcard}${ncache} _mnt > /dev/null 2>&1
if [ $? -ne 0 ]; then
	echo "ERROR mounting ${sdcard}${ncache}"
	exit 1
fi
#----------------------------------------------------------------------------------------------------------

#----------------------------------------------------------------------------------------------------------
echo ""
echo "Copying cache partition ..."
rsync -r -t -p -o -g -x --delete -l -H -D --numeric-ids -s --stats _mnt/ ${bkpdir}/cache/ > /dev/null 2>&1
sync
fs_size=`du -s -h ${bkpdir}/cache | awk '{print $1}'`
echo "File system size: $fs_size"
umount _mnt

mkdir ${bkpdir}/storage > /dev/null 2>&1
mount ${sdcard}1 _mnt > /dev/null 2>&1
if [ $? -ne 0 ]; then
	echo "ERROR mounting ${sdcard}1"
	exit 1
fi
#----------------------------------------------------------------------------------------------------------

#----------------------------------------------------------------------------------------------------------
echo ""
echo "Copying storage partition ..."
rsync -r -t -p -o -g -x --delete -l -H -D --numeric-ids -s --stats _mnt/ ${bkpdir}/storage/ > /dev/null 2>&1
sync
fs_size=`du -s -h ${bkpdir}/storage | awk '{print $1}'`
echo "File system size: $fs_size"
umount _mnt

#----------------------------------------------------------------------------------------------------------
sync

echo ""
echo "====================================================================="
echo "Android SDCard structure saved, filesystems extracted to directories."
echo "====================================================================="
echo ""
# -------------------------------------------------------------------